"Tam/WB2TT" wrote in message
. ..

"kd5sak" wrote in message
om...

"Buck" wrote in message
...


BB Will an antenna rotator like a Radio Shack or Channel Master work
if
BB hung upside-down from a roof beam, or should I try to come up with
a
BB way to secure it to the attic floor?



Do you have a break-down of the assembly of the rotor? If there are
no bearings when held upside down, you may damage the rotor by hanging
it that way.

Buck
--
Don't know about some of the newer inexpensive TV type rotors, but my
old
AR-40 has lubricated ball bearings running in a groove. Don't know if
running that upside down would
be a problem or not. I believe I'd work out an attic floor mount that
would allow it to operate in the normal orientation. If cost is not a
priority, however, running it upside down might make for an interesting
experiment.

Harold
KD5SAK
I don't think it will work right. There will be no force on the ball
bearings at all, they will just be floating. All the friction will show up
on whatever is on the other end of the shaft that keeps the unit from
falling apart.

Tam/WB2TT



Caution, ancient history: In the early 1970's, I hung a rotor upside down
in an attic. It only had a 4-bay bowtie UHF TV antenna on it, but it was
rotated at least daily and never gave me a bit of trouble in about two
years.

No, I don't recall the brand but it was the kind with the wirewound resistor
and wiper for position information. Alliance may have been the company
that did it that way.

John
KD6VKW